Just to add a bit to doing the party on a tour night... I can only speak to what transpired on the evening I attended with a tour group.
- First, you get hit with the yeah you paid for what you thought was exclusive access to a special event party but surprise you aren't so special. Even though we were the first to arrive at the event area, the CM with a look of don't blame me informs us there is another group coming and whatever time they get here you have to give them a 15 minute head start. You are now second tier to them. The CM told us it was out of his control, he didn't like it and it was out of the event managers control. No mention of that in the online signup.
- When the tour group arrived they parted the seas and the group went in and instantly they took on the persona that the party was for them and that somehow we were allowed to come join them later. Much like fastpass would work at such an event you get to fight for lesser spaces as if we were standby. By the time we entered not only were all the tables gone, but many of the tour group were back in line ahead of us for seconds and thirds.
- The children in the tour were now filled with sugar and armed with light sabers in a free for all space. So careful how you carry those drinks or that plate of desserts back to whatever space you can find because the higher tables are gone and only a few wheelchair accessible height tables remained if you were lucky enough to get one of those.
- On the evening we attended there was pretty much no interaction with the storm troopers whereas when we attended this same party before with no tour there was considerable interaction.
- Most of the tour group on the evening we attended did not wander out and filled the main party area for the majority of the evening.
I get the hard ticket perks of paying for exclusive areas and events. This however didn't quite fit the expectation setup by the advertising. At no other dessert party that I'm aware of (and I have attended all I know of) do you have to wait unexpectedly while some other group gets first dibs. You may have better luck. Maybe the tour group the night you are there doesn't take on the persona they did when we attended, but I would be more surprised if they didn't. Dollar for dollar who pays more for the dessert party? By every calculation I can try to glean from the figures the dessert party only guest are the ones with the higher contribution. Bet they wouldn't sell that tour package without the dessert party for $52. My point is not to run down the tour, by all means if that's your thing do it. The problem is in VIP guest experience management. The tour should either have a separate reserved area or just let everyone in at the same time.
I made my experience known to guest services. Guest services responded with compensation and the promise to forward my concerns and experience. I will not book again on a tour night nor do schedule alterations and dodging to avoid it.